I've down loaded the dnn 4.0.2. Unpacked it, put in iis local host, opend it in vs(beta version). Did all the configuration with the web.config file and sql. Crt+F5 in vs. And I've got an error

Error 1 Unrecognized attribute 'requirePermission'. Note that attribute names are case-sensitive. (G:\Inetpub\wwwroot\dnn\web.config line 6)  

But in this web.config file there is a litell note

<!-- the requirePermission attribute will cause a syntax warning - please ignore - it is required for Medium Trust support-->

So I stuck on this.May be there is a way to change the trust support? May be vs betta not good enough? and need to get full releas? Put some ideas and some help please.